A research team led by Professor Jianping Huang from Lanzhou University has launched a Global Prediction System for the COVID-19 pandemic. Their recent work explored the periodicity and mutability in the evolutionary history of the COVID-19 pandemic and investigated the principle mechanisms behind them. They attributed the periodic oscillations of COVID-19 daily cases to seasonal modulations and reporting bias, and identified unrestricted mass gatherings as the main culprit of the COVID-19 disaster.